Mother Teresa was a Catholic nun from Albanian who founded the Missionaries of Charity in Calcutta, India in 1950. For over 45 years she ministered to the poor, sick, orphaned, and dying, while guiding the Missionaries of Charity's expansion, first throughout India and then in other countries. Following her death she was beatified by Pope John Paul II and given the title Blessed Teresa of Calcutta.
By the 1970s, she was internationally famed as a humanitarian and advocate for the poor and helpless, due in part to a documentary and book Something Beautiful for God by Malcolm Muggeridge. She won the Nobel Peace Prize in 1979 and India's highest civilian honour, the Bharat Ratna, in 1980 for her humanitarian work. Mother Teresa's Missionaries of Charity continued to expand, and at the time of her death it was operating 610 missions in 123 countries, including hospices and homes for people with HIV/AIDS, leprosy and tuberculosis, soup kitchens, children's and family counselling programs, orphanages, and schools. More at Wikipedia